Pertaining to Lent; taking place during Lent. / Appropriate to Lent; meagre, sombre.

(obsolete) A calling away; a diversion. / A hobby or recreational or leisure pursuit. / That which calls one away from one's regular employment or vocation.

(UK) A note from a doctor certifying the patient is ill, and therefore unable to go to work, school etc. / (UK, idiomatic) Someone who dodges work because of (feigned) illness.

present participle of ill-use