1.  anal(a = adj.pert) - of or related to the anus; "anal thermometer"
Derived form noun anus₁

2.  anal(a = adj.all) anal retentive - a stage in psychosexual development when the child's interest is concentrated on the anal region; fixation at this stage is said to result in orderliness, meanness, stubbornness, compulsiveness, etc.;
Antonym: oral

   Pertaining to, or situated near, the anus; as, the anal fin or glands. [1913 Webster]

anal, adj. relating to or situated near the anus.

Idiom:
anal retentive (of a person) excessively orderly and fussy (supposedly owing to aspects of toilet-training in infancy).

Derivative:
anally adv.

Etymology:
mod.L analis (as ANUS)

N  fastidiousness, nicety, hypercriticism, difficulty in being pleased, friandise, epicurism, omnia suspendens naso, epicure, gourmet, prudery, fastidious, nice, delicate, delicat, finical, finicky, demanding, meticulous, exacting, strict, anal, difficult, dainty, lickerish, squeamish, thin-skinned, squeasy, queasy, hard to please, difficult to please, querulous, particular, straitlaced, scrupulous, censorious, hypercritical, overcritical, noli me tangere.

anal intercourse, anal personality, anal phase, anal retentive, anal retentive personality, anal sex, anal sphincter, anal stage